The epigenetic puzzle which is schizophrenia, forms the focus of this monograph, but the authors do not sit comfortably with the notion that this is an entity. Rather, they approach the non-affective psychoses on a broad epidemiological base, ascertaining cases of so-called functional psychoses over a quarter of a century. They examine admission policies, showing that patients are admitted to hospital on the grounds of their particular presentation, rather than their diagnosis. They explore differences between males and females with psychotic disorders, and show that gender is a more powerful...